Reliability of Reciprocal Isokinetic Testing of the Knee Extensors and Flexors

Levene, John A.; Hart, Barbara A.; Seeds, Robert H.; Fuhrman, Gregg A.

doi:10.2519/jospt.1991.14.3.121

Cited by 32 publications

(17 citation statements)

References 13 publications

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“…The rest periods (30 seconds between repetitions) used were in agreement with previous strength studies and were sufficient to avoid the effects of fatigue. 3,14,15 Pilot testing was performed on 2 subjects, 1 man and 1 woman, by use of an identical testing method. On the basis of the results, we determined that 0.5 kg was a realistic level of expected change that would be potentially clinically meaningful.…”

Section: Methodsmentioning

confidence: 99%

The effect of scapular protraction on isometric shoulder rotation strength in normal subjects

Smith¹,

Dietrich²,

Kotajarvi³

et al. 2006

Journal of Shoulder and Elbow Surgery

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Section: Methodsmentioning

confidence: 99%

The effect of scapular protraction on isometric shoulder rotation strength in normal subjects

Smith¹,

Dietrich²,

Kotajarvi³

et al. 2006

Journal of Shoulder and Elbow Surgery

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“…Isokinetic testing has been recognized as an accurate and a reliable method to measure muscle strength objectively [17][18][19][20]. In particular, the test-retest reproducibility of isokinetic muscle performance for shoulder, elbow, and knee muscles was confirmed in previous studies [21][22][23].…”

Section: Discussionmentioning

confidence: 82%

Isokinetic muscle strength profile of ladies professional tour golfers

Chung

Song²,

Kim

et al. 2014

IES

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BACKGROUND: The highly trained professional tour golfers would likely have different strength profiles in their muscle groups from non-athletes, which may be associated with the level of golf performance. OBJECTIVES: To describe an isokinetic muscle strength profile of several upper and lower extremity muscles of ladies professional tour golfers in comparison to non-athlete controls, and to explore possible correlations between strength and driving distance and average score. METHODS: Sixty seven ladies professional tour golfers and 25 non-athletic women were enrolled. Absolute and weightadjusted concentric isokinetic peak torque (PT) at 60 • /s of the shoulder abductors, adductors and rotators, and elbow and knee flexors and extensors were measured bilaterally. RESULTS: All absolute and most weight-adjusted PTs were significantly higher in professional tour golfers than non-athletes. The weight-adjusted PT differed significantly only with respect to the shoulder adductors and knee muscles. Significantly higher strength ratios: bilateral shoulder adductor/abductor, right shoulder internal/external rotator, right elbow extensor/flexor, and bilateral knee flexor/extensor characterized the golfers. Further, the correlations between the strength of any of the tested muscles and either the driving distance or the average score were low to negligible. CONCLUSIONS: These results furnish a reference framework for isokinetic strength of the abovementioned muscles of professional tour golfers, and thus be used in setting realistic rehabilitation goals for lady golfers who suffer from some injury involving, directly or indirectly, these muscles.

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“…Preload was set at 50 Newtons (N) for both internal and external rotation. The rest periods were chosen in concordance with previous studies to avoid fatigue effects [9,30,31].…”

Section: Isometric Testingmentioning

confidence: 99%

Isokinetic and isometric shoulder rotation strength in the protracted position: A reliability study

Smith

Padgett

Kotajarvi

et al. 2001

IES

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Scapular position has been hypothesized to influence rotator cuff function, but no current methods exist to reliably measure shoulder rotation strength in different scapular positions. The purpose of this study was to develop a reliable technique to measure isokinetic (ISOK) and isometric (ISOM) shoulder rotation strength with the scapula protracted. Ten healthy volunteers (5 male, 5 female, ages 20-41) completed two to three ISOM and five ISOK (90 degrees/second) internal rotation (IR) and external rotation (ER) repetitions in a position of scapular protraction with the shoulder abducted 45 degrees in the scapular plane. Subjects returned 24-72 hours later to repeat testing. All torque measurements in the protracted position exhibited excellent intersession reliability (ICCs > 0.97). Shoulder rotational torque can be measured in the protracted scapula position with excellent reliability using the new technique described. Establishing the reliability of the protracted technique is a necessary prerequisite for the completion of future studies examining quantitative differences in rotational torque generation between the neutral and protracted scapula positions in the functional shoulder position of 45 degrees of scapular plane abduction.

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Reliability of Reciprocal Isokinetic Testing of the Knee Extensors and Flexors

Cited by 32 publications

References 13 publications

The effect of scapular protraction on isometric shoulder rotation strength in normal subjects

The effect of scapular protraction on isometric shoulder rotation strength in normal subjects

Isokinetic muscle strength profile of ladies professional tour golfers

Isokinetic and isometric shoulder rotation strength in the protracted position: A reliability study

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